<?php
/*
 * CKFinder
 * ========
 * http://ckfinder.com
 * Copyright (C) 2007-2011, CKSource - Frederico Knabben. All rights reserved.
 *
 * The software, this file and its contents are subject to the CKFinder
 * License. Please read the license.txt file before using, installing, copying,
 * modifying or distribute this file or part of its contents. The contents of
 * this file is part of the Source Code of CKFinder.
 */
if (!defined('IN_CKFINDER')) exit;

/**
 * @package CKFinder
 * @subpackage CommandHandlers
 * @copyright CKSource - Frederico Knabben
 */

/**
 * Base commands handler
 *
 * @package CKFinder
 * @subpackage CommandHandlers
 * @copyright CKSource - Frederico Knabben
 * @abstract
 *
 */
class CKFinder_Connector_CommandHandler_CommandHandlerBase
{
	/**
	 * CKFinder_Connector_Core_Connector object
	 *
	 * @access protected
	 * @var CKFinder_Connector_Core_Connector
	 */
	protected $_connector;
	/**
	 * CKFinder_Connector_Core_FolderHandler object
	 *
	 * @access protected
	 * @var CKFinder_Connector_Core_FolderHandler
	 */
	protected $_currentFolder;
	/**
	 * Error handler object
	 *
	 * @access protected
	 * @var CKFinder_Connector_ErrorHandler_Base|CKFinder_Connector_ErrorHandler_FileUpload|CKFinder_Connector_ErrorHandler_Http
	 */
	protected $_errorHandler;

	function __construct()
	{
		$this->_currentFolder =& CKFinder_Connector_Core_Factory::getInstance("Core_FolderHandler");
		$this->_connector =& CKFinder_Connector_Core_Factory::getInstance("Core_Connector");
		$this->_errorHandler =& $this->_connector->getErrorHandler();
	}

	/**
	 * Get Folder Handler
	 *
	 * @access public
	 * @return CKFinder_Connector_Core_FolderHandler
	 */
	public function getFolderHandler()
	{
		if (is_null($this->_currentFolder)) {
			$this->_currentFolder =& CKFinder_Connector_Core_Factory::getInstance("Core_FolderHandler");
		}

		return $this->_currentFolder;
	}

	/**
	 * Check whether Connector is enabled
	 * @access protected
	 *
	 */
	protected function checkConnector()
	{
		$_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");
		if (!$_config->getIsEnabled()) {
			$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_CONNECTOR_DISABLED);
		}
	}

	/**
	 * Check request
	 * @access protected
	 *
	 */
	protected function checkRequest()
	{
		if (preg_match(CKFINDER_REGEX_INVALID_PATH, $this->_currentFolder->getClientPath())) {
			$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_NAME);
		}

		$_resourceTypeConfig = $this->_currentFolder->getResourceTypeConfig();

		if (is_null($_resourceTypeConfig)) {
			$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_TYPE);
		}

		$_clientPath = $this->_currentFolder->getClientPath();
		$_clientPathParts = explode("/", trim($_clientPath, "/"));
		if ($_clientPathParts) {
			foreach ($_clientPathParts as $_part) {
				if ($_resourceTypeConfig->checkIsHiddenFolder($_part)) {
					$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_INVALID_REQUEST);
				}
			}
		}

		if (!is_dir($this->_currentFolder->getServerPath())) {
			if ($_clientPath == "/") {
				if (!CKFinder_Connector_Utils_FileSystem::createDirectoryRecursively($this->_currentFolder->getServerPath())) {
					/**
					 * @todo handle error
					 */
				}
			}
			else {
				$this->_errorHandler->throwError(CKFINDER_CONNECTOR_ERROR_FOLDER_NOT_FOUND);
			}
		}
	}
}
